荧光假单胞菌LSW-4联合苗强壮对烟草青枯病的防控效果及促生作用  

Control Effect and Growth-Promoting Function ofPseudomonas fluorescens LSW-4 Combined with SeedlingStrengthening on Tobacco Bacterial Wilt

作　　者：白建淞 汪安斌 刘知军 瞿远军 张贺翠[2] 陆宁 丁伟[4] BAI Jiansong;WANG Anbin;LIU Zhijun;QU Yuanjun;ZHANG Hecui;LU Ning;DING Wei(Weng'an Branch of Qiannan Company of Guizhou Tobacco Company,Qiannan Guizhou 558000,China;College of Agronomy and Biotechnology,Southwest University,Chongqing 400715,China;Guizhou Academy of Tobacco Science,Guiyang 550081,China;College of Plant Protection,Southwest University,Chongqing 400715,China)

机构地区：[1]贵州省烟草公司黔南州公司瓮安分公司,贵州黔南558000 [2]西南大学农学与生物科技学院,重庆400715 [3]贵州省烟草科学研究院,贵阳550081 [4]西南大学植物保护学院,重庆400715

出　　处：《植物医学》2025年第2期45-52,共8页Plant Health and Medicine

基　　金：中国烟草总公司科技项目(110202101055(LS-15));西南大学校内横向项目[M2022052]。

摘　　要：烟草青枯病是严重的烟草根茎病害,防控难度大且造成损失巨大。针对贵州省黔南地区烟草青枯病危害严重的问题,评估了荧光假单胞菌LSW-4联合苗强壮在大田环境下对烟草生育期、农艺性状、防控效果及经济效益的影响。结果显示:荧光假单胞菌LSW-4联合苗强壮处理对烟草具有促生作用,全生育期缩短10 d;旺长期及打顶后7 d对烟草农艺性状的影响最显著,打顶后7 d株高、茎围、最大叶长、最大叶宽、有效叶片数和最大叶面积明显优于空白对照组,差异具有统计学意义;并且其农艺性状均优于单用苗强壮处理。荧光假单胞菌LSW-4联合苗强壮处理烟草青枯病防控效果最佳,苗强壮次之,发病初期相对防效达100.00%,发病高峰期相对防效为76.01%,发病后期防效仍为66.89%。经济性状方面,荧光假单胞菌LSW-4联合苗强壮处理相比空白对照,每667 m^(2)产量增加23.07 kg,每667 m^(2)产值提升1 065.80元,烟叶均价提高2.78元/kg。可见荧光假单胞菌LSW-4联合苗强壮可协同增效,促进烟草生长并提高防控效果。Tobacco bacterial wilt is a serious root disease of tobacco,which is difficult to control and causes a great loss to tobacco production.Aiming at the problem of serious damage to tobacco by bacterial wilt in Qiannan area of Guizhou Province,the effects of Pseudomonas fluorescence LSW-4 combined with promoting seedling strength on tobacco growth period,agronomic traits,disease control effect and economic benefit in field were evaluated.The results showed that the combined treatment of LSW-4 with promoting seedling strength had a growth-promoting effect on tobacco,and the whole growth period was shortened by 10 days.The most significant effects on agronomic traits of tobacco was observed in flowering period and 7 days after topping.The index of plant height,stem circumference,maximum leaf length,maximum leaf width,effective leaf number and maximum leaf area in treatment group were significantly better than those of in blank control group at 7 days after topping,and the differences were statistically significant.The agronomic characters of combined treatment were better than that of promoting seedling strength.The control effect of LSW-4 combined with seedling strength was the best,followed by seedling strength.The relative control effect was 100.00%when treatment applied at the early stage of infection,76.01%at the peak period of incidence,and 66.89%at the later stage of the disease.In terms of economic characteristics,compared with the blank control,the yield of LSW-4 combined seedling strengthening treatment increased by 23.07 kg per 667 m^(2),the output value increased by 1,065.80 yuan per 667 m^(2),and the average price of tobacco leaf increased by 2.78 yuan/kg.It can be seen that the combined treatment of P.fluorescein LSW-4 with seedling strengthening can synergistically promote tobacco growth and improve the control effect.

关 键 词：烟草青枯病 荧光假单胞菌 复配组合 促生作用 病害防控 

分 类 号：S432.4[农业科学—植物病理学]